{"id":"CVE-2025-52958","aliases":["EUVD-2025-21162","GHSA-5694-q557-w4rg"],"status":"published","title":"Junos OS and Junos OS Evolved: When route validation is enabled, BGP connection establishment failure causes RPD crash","description":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.\n\nContinued session establishment failures leads to a sustained DoS condition. \n\nThis issue affects Junos OS:\n\n  *  All versions before 22.2R3-S6, \n  *  from 22.4 before 22.4R3-S6, \n  *  from 23.2 before 23.2R2-S3, \n  *  from 23.4 before 23.4R2-S4, \n  *  from 24.2 before 24.2R2; \n\n\n\nJunos OS Evolved: \n  *  All versions before 22.2R3-S6-EVO, \n  *  from 22.4 before 22.4R3-S6-EVO,\n  *  from 23.2 before 23.2R2-S3-EVO,\n  *  from 23.4 before 23.4R2-S4-EVO, \n  *  from 24.2 before 24.2R2-EVO.","severity":{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M/U:Green","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00246,"percentile":0.15944,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2025-07-11T14:43:38Z","modified":"2026-06-17T09:37:20Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA100066","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-52958"},{"url":"https://github.com/advisories/GHSA-5694-q557-w4rg"}],"sources":{"cve":[{"id":"CVE-2025-52958","title":"Junos OS and Junos OS Evolved: When route validation is enabled, BGP connection establishment failure causes RPD crash","description":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.\n\nContinued session establishment failures leads to a sustained DoS condition. \n\nThis issue affects Junos OS:\n\n  *  All versions before 22.2R3-S6, \n  *  from 22.4 before 22.4R3-S6, \n  *  from 23.2 before 23.2R2-S3, \n  *  from 23.4 before 23.4R2-S4, \n  *  from 24.2 before 24.2R2; \n\n\n\nJunos OS Evolved: \n  *  All versions before 22.2R3-S6-EVO, \n  *  from 22.4 before 22.4R3-S6-EVO,\n  *  from 23.2 before 23.2R2-S3-EVO,\n  *  from 23.4 before 23.4R2-S4-EVO, \n  *  from 24.2 before 24.2R2-EVO.","status":"published","published":"2025-07-11T14:43:38.431Z","modified":"2025-07-11T14:55:56.096Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M/U:Green","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:32:31.309974Z"}],"euvd":[{"id":"EUVD-2025-21162","description":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.\n\nContinued session establishment failures leads to a sustained DoS condition. \n\nThis issue affects Junos OS:\n\n  *  All versions before 22.2R3-S6, \n  *  from 22.4 before 22.4R3-S6, \n  *  from 23.2 before 23.2R2-S3, \n  *  from 23.4 before 23.4R2-S4, \n  *  from 24.2 before 24.2R2; \n\n\n\nJunos OS Evolved: \n  *  All versions before 22.2R3-S6-EVO, \n  *  from 22.4 before 22.4R3-S6-EVO,\n  *  from 23.2 before 23.2R2-S3-EVO,\n  *  from 23.4 before 23.4R2-S4-EVO, \n  *  from 24.2 before 24.2R2-EVO.","status":"published","published":"2025-07-11T14:43:38Z","modified":"2025-07-11T14:55:56Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M/U:Green","level":"medium"}],"updated_at":"2026-11-02T20:32:09.102762Z"}],"ghsa":[{"id":"GHSA-5694-q557-w4rg","title":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks...","description":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.\n\nContinued session establishment failures leads to a sustained DoS condition. \n\nThis issue affects Junos OS:\n\n  *  All versions before 22.2R3-S6, \n  *  from 22.4 before 22.4R3-S6, \n  *  from 23.2 before 23.2R2-S3, \n  *  from 23.4 before 23.4R2-S4, \n  *  from 24.2 before 24.2R2; \n\n\n\nJunos OS Evolved: \n  *  All versions before 22.2R3-S6-EVO, \n  *  from 22.4 before 22.4R3-S6-EVO,\n  *  from 23.2 before 23.2R2-S3-EVO,\n  *  from 23.4 before 23.4R2-S4-EVO, \n  *  from 24.2 before 24.2R2-EVO.","status":"published","published":"2025-07-11T15:31:39Z","modified":"2025-07-11T15:31:39Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:Green","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:02:59.345355Z"}],"nvd":[{"id":"CVE-2025-52958","description":"A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.\n\nContinued session establishment failures leads to a sustained DoS condition. \n\nThis issue affects Junos OS:\n\n  *  All versions before 22.2R3-S6, \n  *  from 22.4 before 22.4R3-S6, \n  *  from 23.2 before 23.2R2-S3, \n  *  from 23.4 before 23.4R2-S4, \n  *  from 24.2 before 24.2R2; \n\n\n\nJunos OS Evolved: \n  *  All versions before 22.2R3-S6-EVO, \n  *  from 22.4 before 22.4R3-S6-EVO,\n  *  from 23.2 before 23.2R2-S3-EVO,\n  *  from 23.4 before 23.4R2-S4-EVO, \n  *  from 24.2 before 24.2R2-EVO.","status":"published","published":"2025-07-11T15:15:26.627Z","modified":"2026-06-17T09:37:20.21Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:Green","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:11:18.285862Z"}]}}